Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | ||
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth HCI sockets. */ | |
26 | ||
8c520a59 | 27 | #include <linux/export.h> |
1da177e4 LT |
28 | #include <asm/unaligned.h> |
29 | ||
30 | #include <net/bluetooth/bluetooth.h> | |
31 | #include <net/bluetooth/hci_core.h> | |
cd82e61c | 32 | #include <net/bluetooth/hci_mon.h> |
1da177e4 | 33 | |
cd82e61c MH |
34 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
35 | ||
1da177e4 LT |
36 | /* ----- HCI socket interface ----- */ |
37 | ||
863def58 MH |
38 | /* Socket info */ |
39 | #define hci_pi(sk) ((struct hci_pinfo *) sk) | |
40 | ||
41 | struct hci_pinfo { | |
42 | struct bt_sock bt; | |
43 | struct hci_dev *hdev; | |
44 | struct hci_filter filter; | |
45 | __u32 cmsg_mask; | |
46 | unsigned short channel; | |
47 | }; | |
48 | ||
1da177e4 LT |
49 | static inline int hci_test_bit(int nr, void *addr) |
50 | { | |
51 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); | |
52 | } | |
53 | ||
54 | /* Security filter */ | |
3ad254f7 MH |
55 | #define HCI_SFLT_MAX_OGF 5 |
56 | ||
57 | struct hci_sec_filter { | |
58 | __u32 type_mask; | |
59 | __u32 event_mask[2]; | |
60 | __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; | |
61 | }; | |
62 | ||
7e67c112 | 63 | static const struct hci_sec_filter hci_sec_filter = { |
1da177e4 LT |
64 | /* Packet types */ |
65 | 0x10, | |
66 | /* Events */ | |
dd7f5527 | 67 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
68 | /* Commands */ |
69 | { | |
70 | { 0x0 }, | |
71 | /* OGF_LINK_CTL */ | |
7c631a67 | 72 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 73 | /* OGF_LINK_POLICY */ |
7c631a67 | 74 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 75 | /* OGF_HOST_CTL */ |
7c631a67 | 76 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 77 | /* OGF_INFO_PARAM */ |
7c631a67 | 78 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 79 | /* OGF_STATUS_PARAM */ |
7c631a67 | 80 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
81 | } |
82 | }; | |
83 | ||
84 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 85 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
86 | }; |
87 | ||
f81fe64f MH |
88 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
89 | { | |
90 | struct hci_filter *flt; | |
91 | int flt_type, flt_event; | |
92 | ||
93 | /* Apply filter */ | |
94 | flt = &hci_pi(sk)->filter; | |
95 | ||
96 | if (bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) | |
97 | flt_type = 0; | |
98 | else | |
99 | flt_type = bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS; | |
100 | ||
101 | if (!test_bit(flt_type, &flt->type_mask)) | |
102 | return true; | |
103 | ||
104 | /* Extra filter for event packets only */ | |
105 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT) | |
106 | return false; | |
107 | ||
108 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); | |
109 | ||
110 | if (!hci_test_bit(flt_event, &flt->event_mask)) | |
111 | return true; | |
112 | ||
113 | /* Check filter only when opcode is set */ | |
114 | if (!flt->opcode) | |
115 | return false; | |
116 | ||
117 | if (flt_event == HCI_EV_CMD_COMPLETE && | |
118 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) | |
119 | return true; | |
120 | ||
121 | if (flt_event == HCI_EV_CMD_STATUS && | |
122 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) | |
123 | return true; | |
124 | ||
125 | return false; | |
126 | } | |
127 | ||
1da177e4 | 128 | /* Send frame to RAW socket */ |
470fe1b5 | 129 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
130 | { |
131 | struct sock *sk; | |
e0edf373 | 132 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
133 | |
134 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
135 | ||
136 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 137 | |
b67bfe0d | 138 | sk_for_each(sk, &hci_sk_list.head) { |
1da177e4 LT |
139 | struct sk_buff *nskb; |
140 | ||
141 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
142 | continue; | |
143 | ||
144 | /* Don't send frame to the socket it came from */ | |
145 | if (skb->sk == sk) | |
146 | continue; | |
147 | ||
23500189 MH |
148 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
149 | if (is_filtered_packet(sk, skb)) | |
150 | continue; | |
151 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { | |
152 | if (!bt_cb(skb)->incoming) | |
153 | continue; | |
154 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT && | |
155 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
156 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) | |
157 | continue; | |
158 | } else { | |
159 | /* Don't send frame to other channel types */ | |
1da177e4 | 160 | continue; |
23500189 | 161 | } |
1da177e4 | 162 | |
e0edf373 MH |
163 | if (!skb_copy) { |
164 | /* Create a private copy with headroom */ | |
bad93e9d | 165 | skb_copy = __pskb_copy_fclone(skb, 1, GFP_ATOMIC, true); |
e0edf373 MH |
166 | if (!skb_copy) |
167 | continue; | |
168 | ||
169 | /* Put type byte before the data */ | |
170 | memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); | |
171 | } | |
172 | ||
173 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 174 | if (!nskb) |
1da177e4 LT |
175 | continue; |
176 | ||
470fe1b5 MH |
177 | if (sock_queue_rcv_skb(sk, nskb)) |
178 | kfree_skb(nskb); | |
179 | } | |
180 | ||
181 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
182 | |
183 | kfree_skb(skb_copy); | |
470fe1b5 MH |
184 | } |
185 | ||
186 | /* Send frame to control socket */ | |
187 | void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk) | |
188 | { | |
189 | struct sock *sk; | |
470fe1b5 MH |
190 | |
191 | BT_DBG("len %d", skb->len); | |
192 | ||
193 | read_lock(&hci_sk_list.lock); | |
194 | ||
b67bfe0d | 195 | sk_for_each(sk, &hci_sk_list.head) { |
470fe1b5 MH |
196 | struct sk_buff *nskb; |
197 | ||
198 | /* Skip the original socket */ | |
199 | if (sk == skip_sk) | |
200 | continue; | |
201 | ||
202 | if (sk->sk_state != BT_BOUND) | |
203 | continue; | |
204 | ||
205 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) | |
206 | continue; | |
207 | ||
208 | nskb = skb_clone(skb, GFP_ATOMIC); | |
209 | if (!nskb) | |
210 | continue; | |
1da177e4 LT |
211 | |
212 | if (sock_queue_rcv_skb(sk, nskb)) | |
213 | kfree_skb(nskb); | |
214 | } | |
470fe1b5 | 215 | |
1da177e4 LT |
216 | read_unlock(&hci_sk_list.lock); |
217 | } | |
218 | ||
cd82e61c MH |
219 | /* Send frame to monitor socket */ |
220 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
221 | { | |
222 | struct sock *sk; | |
cd82e61c MH |
223 | struct sk_buff *skb_copy = NULL; |
224 | __le16 opcode; | |
225 | ||
226 | if (!atomic_read(&monitor_promisc)) | |
227 | return; | |
228 | ||
229 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
230 | ||
231 | switch (bt_cb(skb)->pkt_type) { | |
232 | case HCI_COMMAND_PKT: | |
dcf4adbf | 233 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
cd82e61c MH |
234 | break; |
235 | case HCI_EVENT_PKT: | |
dcf4adbf | 236 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
cd82e61c MH |
237 | break; |
238 | case HCI_ACLDATA_PKT: | |
239 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 240 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
cd82e61c | 241 | else |
dcf4adbf | 242 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
cd82e61c MH |
243 | break; |
244 | case HCI_SCODATA_PKT: | |
245 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 246 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
cd82e61c | 247 | else |
dcf4adbf | 248 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
cd82e61c MH |
249 | break; |
250 | default: | |
251 | return; | |
252 | } | |
253 | ||
254 | read_lock(&hci_sk_list.lock); | |
255 | ||
b67bfe0d | 256 | sk_for_each(sk, &hci_sk_list.head) { |
cd82e61c MH |
257 | struct sk_buff *nskb; |
258 | ||
259 | if (sk->sk_state != BT_BOUND) | |
260 | continue; | |
261 | ||
262 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
263 | continue; | |
264 | ||
265 | if (!skb_copy) { | |
266 | struct hci_mon_hdr *hdr; | |
267 | ||
268 | /* Create a private copy with headroom */ | |
bad93e9d OP |
269 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, |
270 | GFP_ATOMIC, true); | |
cd82e61c MH |
271 | if (!skb_copy) |
272 | continue; | |
273 | ||
274 | /* Put header before the data */ | |
275 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); | |
276 | hdr->opcode = opcode; | |
277 | hdr->index = cpu_to_le16(hdev->id); | |
278 | hdr->len = cpu_to_le16(skb->len); | |
279 | } | |
280 | ||
281 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
282 | if (!nskb) | |
283 | continue; | |
284 | ||
285 | if (sock_queue_rcv_skb(sk, nskb)) | |
286 | kfree_skb(nskb); | |
287 | } | |
288 | ||
289 | read_unlock(&hci_sk_list.lock); | |
290 | ||
291 | kfree_skb(skb_copy); | |
292 | } | |
293 | ||
294 | static void send_monitor_event(struct sk_buff *skb) | |
295 | { | |
296 | struct sock *sk; | |
cd82e61c MH |
297 | |
298 | BT_DBG("len %d", skb->len); | |
299 | ||
300 | read_lock(&hci_sk_list.lock); | |
301 | ||
b67bfe0d | 302 | sk_for_each(sk, &hci_sk_list.head) { |
cd82e61c MH |
303 | struct sk_buff *nskb; |
304 | ||
305 | if (sk->sk_state != BT_BOUND) | |
306 | continue; | |
307 | ||
308 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
309 | continue; | |
310 | ||
311 | nskb = skb_clone(skb, GFP_ATOMIC); | |
312 | if (!nskb) | |
313 | continue; | |
314 | ||
315 | if (sock_queue_rcv_skb(sk, nskb)) | |
316 | kfree_skb(nskb); | |
317 | } | |
318 | ||
319 | read_unlock(&hci_sk_list.lock); | |
320 | } | |
321 | ||
322 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) | |
323 | { | |
324 | struct hci_mon_hdr *hdr; | |
325 | struct hci_mon_new_index *ni; | |
326 | struct sk_buff *skb; | |
327 | __le16 opcode; | |
328 | ||
329 | switch (event) { | |
330 | case HCI_DEV_REG: | |
331 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
332 | if (!skb) | |
333 | return NULL; | |
334 | ||
335 | ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE); | |
336 | ni->type = hdev->dev_type; | |
337 | ni->bus = hdev->bus; | |
338 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
339 | memcpy(ni->name, hdev->name, 8); | |
340 | ||
dcf4adbf | 341 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
cd82e61c MH |
342 | break; |
343 | ||
344 | case HCI_DEV_UNREG: | |
345 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
346 | if (!skb) | |
347 | return NULL; | |
348 | ||
dcf4adbf | 349 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
cd82e61c MH |
350 | break; |
351 | ||
352 | default: | |
353 | return NULL; | |
354 | } | |
355 | ||
356 | __net_timestamp(skb); | |
357 | ||
358 | hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE); | |
359 | hdr->opcode = opcode; | |
360 | hdr->index = cpu_to_le16(hdev->id); | |
361 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
362 | ||
363 | return skb; | |
364 | } | |
365 | ||
366 | static void send_monitor_replay(struct sock *sk) | |
367 | { | |
368 | struct hci_dev *hdev; | |
369 | ||
370 | read_lock(&hci_dev_list_lock); | |
371 | ||
372 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
373 | struct sk_buff *skb; | |
374 | ||
375 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
376 | if (!skb) | |
377 | continue; | |
378 | ||
379 | if (sock_queue_rcv_skb(sk, skb)) | |
380 | kfree_skb(skb); | |
381 | } | |
382 | ||
383 | read_unlock(&hci_dev_list_lock); | |
384 | } | |
385 | ||
040030ef MH |
386 | /* Generate internal stack event */ |
387 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
388 | { | |
389 | struct hci_event_hdr *hdr; | |
390 | struct hci_ev_stack_internal *ev; | |
391 | struct sk_buff *skb; | |
392 | ||
393 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
394 | if (!skb) | |
395 | return; | |
396 | ||
397 | hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE); | |
398 | hdr->evt = HCI_EV_STACK_INTERNAL; | |
399 | hdr->plen = sizeof(*ev) + dlen; | |
400 | ||
401 | ev = (void *) skb_put(skb, sizeof(*ev) + dlen); | |
402 | ev->type = type; | |
403 | memcpy(ev->data, data, dlen); | |
404 | ||
405 | bt_cb(skb)->incoming = 1; | |
406 | __net_timestamp(skb); | |
407 | ||
408 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
040030ef MH |
409 | hci_send_to_sock(hdev, skb); |
410 | kfree_skb(skb); | |
411 | } | |
412 | ||
413 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
414 | { | |
415 | struct hci_ev_si_device ev; | |
416 | ||
417 | BT_DBG("hdev %s event %d", hdev->name, event); | |
418 | ||
cd82e61c MH |
419 | /* Send event to monitor */ |
420 | if (atomic_read(&monitor_promisc)) { | |
421 | struct sk_buff *skb; | |
422 | ||
423 | skb = create_monitor_event(hdev, event); | |
424 | if (skb) { | |
425 | send_monitor_event(skb); | |
426 | kfree_skb(skb); | |
427 | } | |
428 | } | |
429 | ||
040030ef MH |
430 | /* Send event to sockets */ |
431 | ev.event = event; | |
432 | ev.dev_id = hdev->id; | |
433 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
434 | ||
435 | if (event == HCI_DEV_UNREG) { | |
436 | struct sock *sk; | |
040030ef MH |
437 | |
438 | /* Detach sockets from device */ | |
439 | read_lock(&hci_sk_list.lock); | |
b67bfe0d | 440 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef MH |
441 | bh_lock_sock_nested(sk); |
442 | if (hci_pi(sk)->hdev == hdev) { | |
443 | hci_pi(sk)->hdev = NULL; | |
444 | sk->sk_err = EPIPE; | |
445 | sk->sk_state = BT_OPEN; | |
446 | sk->sk_state_change(sk); | |
447 | ||
448 | hci_dev_put(hdev); | |
449 | } | |
450 | bh_unlock_sock(sk); | |
451 | } | |
452 | read_unlock(&hci_sk_list.lock); | |
453 | } | |
454 | } | |
455 | ||
1da177e4 LT |
456 | static int hci_sock_release(struct socket *sock) |
457 | { | |
458 | struct sock *sk = sock->sk; | |
7b005bd3 | 459 | struct hci_dev *hdev; |
1da177e4 LT |
460 | |
461 | BT_DBG("sock %p sk %p", sock, sk); | |
462 | ||
463 | if (!sk) | |
464 | return 0; | |
465 | ||
7b005bd3 MH |
466 | hdev = hci_pi(sk)->hdev; |
467 | ||
cd82e61c MH |
468 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
469 | atomic_dec(&monitor_promisc); | |
470 | ||
1da177e4 LT |
471 | bt_sock_unlink(&hci_sk_list, sk); |
472 | ||
473 | if (hdev) { | |
23500189 | 474 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
0602a8ad | 475 | mgmt_index_added(hdev); |
23500189 MH |
476 | clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags); |
477 | hci_dev_close(hdev->id); | |
478 | } | |
479 | ||
1da177e4 LT |
480 | atomic_dec(&hdev->promisc); |
481 | hci_dev_put(hdev); | |
482 | } | |
483 | ||
484 | sock_orphan(sk); | |
485 | ||
486 | skb_queue_purge(&sk->sk_receive_queue); | |
487 | skb_queue_purge(&sk->sk_write_queue); | |
488 | ||
489 | sock_put(sk); | |
490 | return 0; | |
491 | } | |
492 | ||
b2a66aad | 493 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
494 | { |
495 | bdaddr_t bdaddr; | |
5e762444 | 496 | int err; |
f0358568 JH |
497 | |
498 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
499 | return -EFAULT; | |
500 | ||
09fd0de5 | 501 | hci_dev_lock(hdev); |
5e762444 | 502 | |
dcc36c16 | 503 | err = hci_bdaddr_list_add(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 504 | |
09fd0de5 | 505 | hci_dev_unlock(hdev); |
5e762444 AJ |
506 | |
507 | return err; | |
f0358568 JH |
508 | } |
509 | ||
b2a66aad | 510 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
511 | { |
512 | bdaddr_t bdaddr; | |
5e762444 | 513 | int err; |
f0358568 JH |
514 | |
515 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
516 | return -EFAULT; | |
517 | ||
09fd0de5 | 518 | hci_dev_lock(hdev); |
5e762444 | 519 | |
dcc36c16 | 520 | err = hci_bdaddr_list_del(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 521 | |
09fd0de5 | 522 | hci_dev_unlock(hdev); |
5e762444 AJ |
523 | |
524 | return err; | |
f0358568 JH |
525 | } |
526 | ||
8e87d142 | 527 | /* Ioctls that require bound socket */ |
6039aa73 GP |
528 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
529 | unsigned long arg) | |
1da177e4 LT |
530 | { |
531 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
532 | ||
533 | if (!hdev) | |
534 | return -EBADFD; | |
535 | ||
0736cfa8 MH |
536 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
537 | return -EBUSY; | |
538 | ||
4a964404 | 539 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) |
fee746b0 MH |
540 | return -EOPNOTSUPP; |
541 | ||
5b69bef5 MH |
542 | if (hdev->dev_type != HCI_BREDR) |
543 | return -EOPNOTSUPP; | |
544 | ||
1da177e4 LT |
545 | switch (cmd) { |
546 | case HCISETRAW: | |
547 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 548 | return -EPERM; |
db596681 | 549 | return -EOPNOTSUPP; |
1da177e4 | 550 | |
1da177e4 | 551 | case HCIGETCONNINFO: |
40be492f MH |
552 | return hci_get_conn_info(hdev, (void __user *) arg); |
553 | ||
554 | case HCIGETAUTHINFO: | |
555 | return hci_get_auth_info(hdev, (void __user *) arg); | |
1da177e4 | 556 | |
f0358568 JH |
557 | case HCIBLOCKADDR: |
558 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 559 | return -EPERM; |
b2a66aad | 560 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
f0358568 JH |
561 | |
562 | case HCIUNBLOCKADDR: | |
563 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 564 | return -EPERM; |
b2a66aad | 565 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
1da177e4 | 566 | } |
0736cfa8 | 567 | |
324d36ed | 568 | return -ENOIOCTLCMD; |
1da177e4 LT |
569 | } |
570 | ||
8fc9ced3 GP |
571 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
572 | unsigned long arg) | |
1da177e4 | 573 | { |
40be492f | 574 | void __user *argp = (void __user *) arg; |
0736cfa8 | 575 | struct sock *sk = sock->sk; |
1da177e4 LT |
576 | int err; |
577 | ||
578 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
579 | ||
c1c4f956 MH |
580 | lock_sock(sk); |
581 | ||
582 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
583 | err = -EBADFD; | |
584 | goto done; | |
585 | } | |
586 | ||
587 | release_sock(sk); | |
588 | ||
1da177e4 LT |
589 | switch (cmd) { |
590 | case HCIGETDEVLIST: | |
591 | return hci_get_dev_list(argp); | |
592 | ||
593 | case HCIGETDEVINFO: | |
594 | return hci_get_dev_info(argp); | |
595 | ||
596 | case HCIGETCONNLIST: | |
597 | return hci_get_conn_list(argp); | |
598 | ||
599 | case HCIDEVUP: | |
600 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 601 | return -EPERM; |
1da177e4 LT |
602 | return hci_dev_open(arg); |
603 | ||
604 | case HCIDEVDOWN: | |
605 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 606 | return -EPERM; |
1da177e4 LT |
607 | return hci_dev_close(arg); |
608 | ||
609 | case HCIDEVRESET: | |
610 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 611 | return -EPERM; |
1da177e4 LT |
612 | return hci_dev_reset(arg); |
613 | ||
614 | case HCIDEVRESTAT: | |
615 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 616 | return -EPERM; |
1da177e4 LT |
617 | return hci_dev_reset_stat(arg); |
618 | ||
619 | case HCISETSCAN: | |
620 | case HCISETAUTH: | |
621 | case HCISETENCRYPT: | |
622 | case HCISETPTYPE: | |
623 | case HCISETLINKPOL: | |
624 | case HCISETLINKMODE: | |
625 | case HCISETACLMTU: | |
626 | case HCISETSCOMTU: | |
627 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 628 | return -EPERM; |
1da177e4 LT |
629 | return hci_dev_cmd(cmd, argp); |
630 | ||
631 | case HCIINQUIRY: | |
632 | return hci_inquiry(argp); | |
1da177e4 | 633 | } |
c1c4f956 MH |
634 | |
635 | lock_sock(sk); | |
636 | ||
637 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
638 | ||
639 | done: | |
640 | release_sock(sk); | |
641 | return err; | |
1da177e4 LT |
642 | } |
643 | ||
8fc9ced3 GP |
644 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
645 | int addr_len) | |
1da177e4 | 646 | { |
0381101f | 647 | struct sockaddr_hci haddr; |
1da177e4 LT |
648 | struct sock *sk = sock->sk; |
649 | struct hci_dev *hdev = NULL; | |
0381101f | 650 | int len, err = 0; |
1da177e4 LT |
651 | |
652 | BT_DBG("sock %p sk %p", sock, sk); | |
653 | ||
0381101f JH |
654 | if (!addr) |
655 | return -EINVAL; | |
656 | ||
657 | memset(&haddr, 0, sizeof(haddr)); | |
658 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
659 | memcpy(&haddr, addr, len); | |
660 | ||
661 | if (haddr.hci_family != AF_BLUETOOTH) | |
662 | return -EINVAL; | |
663 | ||
1da177e4 LT |
664 | lock_sock(sk); |
665 | ||
7cc2ade2 | 666 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
667 | err = -EALREADY; |
668 | goto done; | |
669 | } | |
670 | ||
7cc2ade2 MH |
671 | switch (haddr.hci_channel) { |
672 | case HCI_CHANNEL_RAW: | |
673 | if (hci_pi(sk)->hdev) { | |
674 | err = -EALREADY; | |
1da177e4 LT |
675 | goto done; |
676 | } | |
677 | ||
7cc2ade2 MH |
678 | if (haddr.hci_dev != HCI_DEV_NONE) { |
679 | hdev = hci_dev_get(haddr.hci_dev); | |
680 | if (!hdev) { | |
681 | err = -ENODEV; | |
682 | goto done; | |
683 | } | |
684 | ||
685 | atomic_inc(&hdev->promisc); | |
686 | } | |
687 | ||
688 | hci_pi(sk)->hdev = hdev; | |
689 | break; | |
690 | ||
23500189 MH |
691 | case HCI_CHANNEL_USER: |
692 | if (hci_pi(sk)->hdev) { | |
693 | err = -EALREADY; | |
694 | goto done; | |
695 | } | |
696 | ||
697 | if (haddr.hci_dev == HCI_DEV_NONE) { | |
698 | err = -EINVAL; | |
699 | goto done; | |
700 | } | |
701 | ||
10a8b86f | 702 | if (!capable(CAP_NET_ADMIN)) { |
23500189 MH |
703 | err = -EPERM; |
704 | goto done; | |
705 | } | |
706 | ||
707 | hdev = hci_dev_get(haddr.hci_dev); | |
708 | if (!hdev) { | |
709 | err = -ENODEV; | |
710 | goto done; | |
711 | } | |
712 | ||
713 | if (test_bit(HCI_UP, &hdev->flags) || | |
714 | test_bit(HCI_INIT, &hdev->flags) || | |
d603b76b MH |
715 | test_bit(HCI_SETUP, &hdev->dev_flags) || |
716 | test_bit(HCI_CONFIG, &hdev->dev_flags)) { | |
23500189 MH |
717 | err = -EBUSY; |
718 | hci_dev_put(hdev); | |
719 | goto done; | |
720 | } | |
721 | ||
722 | if (test_and_set_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
723 | err = -EUSERS; | |
724 | hci_dev_put(hdev); | |
725 | goto done; | |
726 | } | |
727 | ||
0602a8ad | 728 | mgmt_index_removed(hdev); |
23500189 MH |
729 | |
730 | err = hci_dev_open(hdev->id); | |
731 | if (err) { | |
732 | clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags); | |
0602a8ad | 733 | mgmt_index_added(hdev); |
23500189 MH |
734 | hci_dev_put(hdev); |
735 | goto done; | |
736 | } | |
737 | ||
738 | atomic_inc(&hdev->promisc); | |
739 | ||
740 | hci_pi(sk)->hdev = hdev; | |
741 | break; | |
742 | ||
7cc2ade2 | 743 | case HCI_CHANNEL_CONTROL: |
4b95a24c | 744 | if (haddr.hci_dev != HCI_DEV_NONE) { |
7cc2ade2 MH |
745 | err = -EINVAL; |
746 | goto done; | |
747 | } | |
748 | ||
801f13bd MH |
749 | if (!capable(CAP_NET_ADMIN)) { |
750 | err = -EPERM; | |
751 | goto done; | |
752 | } | |
753 | ||
7cc2ade2 MH |
754 | break; |
755 | ||
cd82e61c MH |
756 | case HCI_CHANNEL_MONITOR: |
757 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
758 | err = -EINVAL; | |
759 | goto done; | |
760 | } | |
761 | ||
762 | if (!capable(CAP_NET_RAW)) { | |
763 | err = -EPERM; | |
764 | goto done; | |
765 | } | |
766 | ||
767 | send_monitor_replay(sk); | |
768 | ||
769 | atomic_inc(&monitor_promisc); | |
770 | break; | |
771 | ||
7cc2ade2 MH |
772 | default: |
773 | err = -EINVAL; | |
774 | goto done; | |
1da177e4 LT |
775 | } |
776 | ||
7cc2ade2 | 777 | |
0381101f | 778 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
779 | sk->sk_state = BT_BOUND; |
780 | ||
781 | done: | |
782 | release_sock(sk); | |
783 | return err; | |
784 | } | |
785 | ||
8fc9ced3 GP |
786 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
787 | int *addr_len, int peer) | |
1da177e4 LT |
788 | { |
789 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
790 | struct sock *sk = sock->sk; | |
9d4b68b2 MH |
791 | struct hci_dev *hdev; |
792 | int err = 0; | |
1da177e4 LT |
793 | |
794 | BT_DBG("sock %p sk %p", sock, sk); | |
795 | ||
06f43cbc MH |
796 | if (peer) |
797 | return -EOPNOTSUPP; | |
798 | ||
1da177e4 LT |
799 | lock_sock(sk); |
800 | ||
9d4b68b2 MH |
801 | hdev = hci_pi(sk)->hdev; |
802 | if (!hdev) { | |
803 | err = -EBADFD; | |
804 | goto done; | |
805 | } | |
806 | ||
1da177e4 LT |
807 | *addr_len = sizeof(*haddr); |
808 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 809 | haddr->hci_dev = hdev->id; |
9d4b68b2 | 810 | haddr->hci_channel= hci_pi(sk)->channel; |
1da177e4 | 811 | |
9d4b68b2 | 812 | done: |
1da177e4 | 813 | release_sock(sk); |
9d4b68b2 | 814 | return err; |
1da177e4 LT |
815 | } |
816 | ||
6039aa73 GP |
817 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
818 | struct sk_buff *skb) | |
1da177e4 LT |
819 | { |
820 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
821 | ||
0d48d939 MH |
822 | if (mask & HCI_CMSG_DIR) { |
823 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
824 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
825 | &incoming); | |
0d48d939 | 826 | } |
1da177e4 | 827 | |
a61bbcf2 | 828 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
829 | #ifdef CONFIG_COMPAT |
830 | struct compat_timeval ctv; | |
831 | #endif | |
a61bbcf2 | 832 | struct timeval tv; |
767c5eb5 MH |
833 | void *data; |
834 | int len; | |
a61bbcf2 PM |
835 | |
836 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 837 | |
1da97f83 DM |
838 | data = &tv; |
839 | len = sizeof(tv); | |
840 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
841 | if (!COMPAT_USE_64BIT_TIME && |
842 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
843 | ctv.tv_sec = tv.tv_sec; |
844 | ctv.tv_usec = tv.tv_usec; | |
845 | data = &ctv; | |
846 | len = sizeof(ctv); | |
767c5eb5 | 847 | } |
1da97f83 | 848 | #endif |
767c5eb5 MH |
849 | |
850 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 851 | } |
1da177e4 | 852 | } |
8e87d142 YH |
853 | |
854 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
3bb3c755 | 855 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
856 | { |
857 | int noblock = flags & MSG_DONTWAIT; | |
858 | struct sock *sk = sock->sk; | |
859 | struct sk_buff *skb; | |
860 | int copied, err; | |
861 | ||
862 | BT_DBG("sock %p, sk %p", sock, sk); | |
863 | ||
864 | if (flags & (MSG_OOB)) | |
865 | return -EOPNOTSUPP; | |
866 | ||
867 | if (sk->sk_state == BT_CLOSED) | |
868 | return 0; | |
869 | ||
70f23020 AE |
870 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
871 | if (!skb) | |
1da177e4 LT |
872 | return err; |
873 | ||
1da177e4 LT |
874 | copied = skb->len; |
875 | if (len < copied) { | |
876 | msg->msg_flags |= MSG_TRUNC; | |
877 | copied = len; | |
878 | } | |
879 | ||
badff6d0 | 880 | skb_reset_transport_header(skb); |
51f3d02b | 881 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 | 882 | |
3a208627 MH |
883 | switch (hci_pi(sk)->channel) { |
884 | case HCI_CHANNEL_RAW: | |
885 | hci_sock_cmsg(sk, msg, skb); | |
886 | break; | |
23500189 | 887 | case HCI_CHANNEL_USER: |
97e0bdeb | 888 | case HCI_CHANNEL_CONTROL: |
cd82e61c MH |
889 | case HCI_CHANNEL_MONITOR: |
890 | sock_recv_timestamp(msg, sk, skb); | |
891 | break; | |
3a208627 | 892 | } |
1da177e4 LT |
893 | |
894 | skb_free_datagram(sk, skb); | |
895 | ||
896 | return err ? : copied; | |
897 | } | |
898 | ||
8e87d142 | 899 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
900 | struct msghdr *msg, size_t len) |
901 | { | |
902 | struct sock *sk = sock->sk; | |
903 | struct hci_dev *hdev; | |
904 | struct sk_buff *skb; | |
905 | int err; | |
906 | ||
907 | BT_DBG("sock %p sk %p", sock, sk); | |
908 | ||
909 | if (msg->msg_flags & MSG_OOB) | |
910 | return -EOPNOTSUPP; | |
911 | ||
912 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
913 | return -EINVAL; | |
914 | ||
915 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
916 | return -EINVAL; | |
917 | ||
918 | lock_sock(sk); | |
919 | ||
0381101f JH |
920 | switch (hci_pi(sk)->channel) { |
921 | case HCI_CHANNEL_RAW: | |
23500189 | 922 | case HCI_CHANNEL_USER: |
0381101f JH |
923 | break; |
924 | case HCI_CHANNEL_CONTROL: | |
925 | err = mgmt_control(sk, msg, len); | |
926 | goto done; | |
cd82e61c MH |
927 | case HCI_CHANNEL_MONITOR: |
928 | err = -EOPNOTSUPP; | |
929 | goto done; | |
0381101f JH |
930 | default: |
931 | err = -EINVAL; | |
932 | goto done; | |
933 | } | |
934 | ||
70f23020 AE |
935 | hdev = hci_pi(sk)->hdev; |
936 | if (!hdev) { | |
1da177e4 LT |
937 | err = -EBADFD; |
938 | goto done; | |
939 | } | |
940 | ||
7e21addc MH |
941 | if (!test_bit(HCI_UP, &hdev->flags)) { |
942 | err = -ENETDOWN; | |
943 | goto done; | |
944 | } | |
945 | ||
70f23020 AE |
946 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
947 | if (!skb) | |
1da177e4 LT |
948 | goto done; |
949 | ||
6ce8e9ce | 950 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
1da177e4 LT |
951 | err = -EFAULT; |
952 | goto drop; | |
953 | } | |
954 | ||
0d48d939 | 955 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 | 956 | skb_pull(skb, 1); |
1da177e4 | 957 | |
1bc5ad16 MH |
958 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
959 | /* No permission check is needed for user channel | |
960 | * since that gets enforced when binding the socket. | |
961 | * | |
962 | * However check that the packet type is valid. | |
963 | */ | |
964 | if (bt_cb(skb)->pkt_type != HCI_COMMAND_PKT && | |
965 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
966 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { | |
967 | err = -EINVAL; | |
968 | goto drop; | |
969 | } | |
970 | ||
971 | skb_queue_tail(&hdev->raw_q, skb); | |
972 | queue_work(hdev->workqueue, &hdev->tx_work); | |
973 | } else if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { | |
83985319 | 974 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
975 | u16 ogf = hci_opcode_ogf(opcode); |
976 | u16 ocf = hci_opcode_ocf(opcode); | |
977 | ||
978 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
979 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
980 | &hci_sec_filter.ocf_mask[ogf])) && | |
981 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
982 | err = -EPERM; |
983 | goto drop; | |
984 | } | |
985 | ||
fee746b0 | 986 | if (ogf == 0x3f) { |
1da177e4 | 987 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 988 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 989 | } else { |
49c922bb | 990 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
991 | * single-command requests. |
992 | */ | |
993 | bt_cb(skb)->req.start = true; | |
994 | ||
1da177e4 | 995 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 996 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
997 | } |
998 | } else { | |
999 | if (!capable(CAP_NET_RAW)) { | |
1000 | err = -EPERM; | |
1001 | goto drop; | |
1002 | } | |
1003 | ||
1004 | skb_queue_tail(&hdev->raw_q, skb); | |
3eff45ea | 1005 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
1006 | } |
1007 | ||
1008 | err = len; | |
1009 | ||
1010 | done: | |
1011 | release_sock(sk); | |
1012 | return err; | |
1013 | ||
1014 | drop: | |
1015 | kfree_skb(skb); | |
1016 | goto done; | |
1017 | } | |
1018 | ||
8fc9ced3 GP |
1019 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
1020 | char __user *optval, unsigned int len) | |
1da177e4 LT |
1021 | { |
1022 | struct hci_ufilter uf = { .opcode = 0 }; | |
1023 | struct sock *sk = sock->sk; | |
1024 | int err = 0, opt = 0; | |
1025 | ||
1026 | BT_DBG("sk %p, opt %d", sk, optname); | |
1027 | ||
1028 | lock_sock(sk); | |
1029 | ||
2f39cdb7 | 1030 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
c2371e80 | 1031 | err = -EBADFD; |
2f39cdb7 MH |
1032 | goto done; |
1033 | } | |
1034 | ||
1da177e4 LT |
1035 | switch (optname) { |
1036 | case HCI_DATA_DIR: | |
1037 | if (get_user(opt, (int __user *)optval)) { | |
1038 | err = -EFAULT; | |
1039 | break; | |
1040 | } | |
1041 | ||
1042 | if (opt) | |
1043 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
1044 | else | |
1045 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
1046 | break; | |
1047 | ||
1048 | case HCI_TIME_STAMP: | |
1049 | if (get_user(opt, (int __user *)optval)) { | |
1050 | err = -EFAULT; | |
1051 | break; | |
1052 | } | |
1053 | ||
1054 | if (opt) | |
1055 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
1056 | else | |
1057 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
1058 | break; | |
1059 | ||
1060 | case HCI_FILTER: | |
0878b666 MH |
1061 | { |
1062 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1063 | ||
1064 | uf.type_mask = f->type_mask; | |
1065 | uf.opcode = f->opcode; | |
1066 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1067 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1068 | } | |
1069 | ||
1da177e4 LT |
1070 | len = min_t(unsigned int, len, sizeof(uf)); |
1071 | if (copy_from_user(&uf, optval, len)) { | |
1072 | err = -EFAULT; | |
1073 | break; | |
1074 | } | |
1075 | ||
1076 | if (!capable(CAP_NET_RAW)) { | |
1077 | uf.type_mask &= hci_sec_filter.type_mask; | |
1078 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
1079 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
1080 | } | |
1081 | ||
1082 | { | |
1083 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1084 | ||
1085 | f->type_mask = uf.type_mask; | |
1086 | f->opcode = uf.opcode; | |
1087 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
1088 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
1089 | } | |
8e87d142 | 1090 | break; |
1da177e4 LT |
1091 | |
1092 | default: | |
1093 | err = -ENOPROTOOPT; | |
1094 | break; | |
1095 | } | |
1096 | ||
2f39cdb7 | 1097 | done: |
1da177e4 LT |
1098 | release_sock(sk); |
1099 | return err; | |
1100 | } | |
1101 | ||
8fc9ced3 GP |
1102 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
1103 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
1104 | { |
1105 | struct hci_ufilter uf; | |
1106 | struct sock *sk = sock->sk; | |
cedc5469 MH |
1107 | int len, opt, err = 0; |
1108 | ||
1109 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 LT |
1110 | |
1111 | if (get_user(len, optlen)) | |
1112 | return -EFAULT; | |
1113 | ||
cedc5469 MH |
1114 | lock_sock(sk); |
1115 | ||
1116 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
c2371e80 | 1117 | err = -EBADFD; |
cedc5469 MH |
1118 | goto done; |
1119 | } | |
1120 | ||
1da177e4 LT |
1121 | switch (optname) { |
1122 | case HCI_DATA_DIR: | |
1123 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1124 | opt = 1; | |
8e87d142 | 1125 | else |
1da177e4 LT |
1126 | opt = 0; |
1127 | ||
1128 | if (put_user(opt, optval)) | |
cedc5469 | 1129 | err = -EFAULT; |
1da177e4 LT |
1130 | break; |
1131 | ||
1132 | case HCI_TIME_STAMP: | |
1133 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1134 | opt = 1; | |
8e87d142 | 1135 | else |
1da177e4 LT |
1136 | opt = 0; |
1137 | ||
1138 | if (put_user(opt, optval)) | |
cedc5469 | 1139 | err = -EFAULT; |
1da177e4 LT |
1140 | break; |
1141 | ||
1142 | case HCI_FILTER: | |
1143 | { | |
1144 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1145 | ||
e15ca9a0 | 1146 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
1147 | uf.type_mask = f->type_mask; |
1148 | uf.opcode = f->opcode; | |
1149 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1150 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1151 | } | |
1152 | ||
1153 | len = min_t(unsigned int, len, sizeof(uf)); | |
1154 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1155 | err = -EFAULT; |
1da177e4 LT |
1156 | break; |
1157 | ||
1158 | default: | |
cedc5469 | 1159 | err = -ENOPROTOOPT; |
1da177e4 LT |
1160 | break; |
1161 | } | |
1162 | ||
cedc5469 MH |
1163 | done: |
1164 | release_sock(sk); | |
1165 | return err; | |
1da177e4 LT |
1166 | } |
1167 | ||
90ddc4f0 | 1168 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
1169 | .family = PF_BLUETOOTH, |
1170 | .owner = THIS_MODULE, | |
1171 | .release = hci_sock_release, | |
1172 | .bind = hci_sock_bind, | |
1173 | .getname = hci_sock_getname, | |
1174 | .sendmsg = hci_sock_sendmsg, | |
1175 | .recvmsg = hci_sock_recvmsg, | |
1176 | .ioctl = hci_sock_ioctl, | |
1177 | .poll = datagram_poll, | |
1178 | .listen = sock_no_listen, | |
1179 | .shutdown = sock_no_shutdown, | |
1180 | .setsockopt = hci_sock_setsockopt, | |
1181 | .getsockopt = hci_sock_getsockopt, | |
1182 | .connect = sock_no_connect, | |
1183 | .socketpair = sock_no_socketpair, | |
1184 | .accept = sock_no_accept, | |
1185 | .mmap = sock_no_mmap | |
1186 | }; | |
1187 | ||
1188 | static struct proto hci_sk_proto = { | |
1189 | .name = "HCI", | |
1190 | .owner = THIS_MODULE, | |
1191 | .obj_size = sizeof(struct hci_pinfo) | |
1192 | }; | |
1193 | ||
3f378b68 EP |
1194 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
1195 | int kern) | |
1da177e4 LT |
1196 | { |
1197 | struct sock *sk; | |
1198 | ||
1199 | BT_DBG("sock %p", sock); | |
1200 | ||
1201 | if (sock->type != SOCK_RAW) | |
1202 | return -ESOCKTNOSUPPORT; | |
1203 | ||
1204 | sock->ops = &hci_sock_ops; | |
1205 | ||
6257ff21 | 1206 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
1da177e4 LT |
1207 | if (!sk) |
1208 | return -ENOMEM; | |
1209 | ||
1210 | sock_init_data(sock, sk); | |
1211 | ||
1212 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1213 | ||
1214 | sk->sk_protocol = protocol; | |
1215 | ||
1216 | sock->state = SS_UNCONNECTED; | |
1217 | sk->sk_state = BT_OPEN; | |
1218 | ||
1219 | bt_sock_link(&hci_sk_list, sk); | |
1220 | return 0; | |
1221 | } | |
1222 | ||
ec1b4cf7 | 1223 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
1224 | .family = PF_BLUETOOTH, |
1225 | .owner = THIS_MODULE, | |
1226 | .create = hci_sock_create, | |
1227 | }; | |
1228 | ||
1da177e4 LT |
1229 | int __init hci_sock_init(void) |
1230 | { | |
1231 | int err; | |
1232 | ||
1233 | err = proto_register(&hci_sk_proto, 0); | |
1234 | if (err < 0) | |
1235 | return err; | |
1236 | ||
1237 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
1238 | if (err < 0) { |
1239 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 1240 | goto error; |
f7c86637 MY |
1241 | } |
1242 | ||
b0316615 | 1243 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
f7c86637 MY |
1244 | if (err < 0) { |
1245 | BT_ERR("Failed to create HCI proc file"); | |
1246 | bt_sock_unregister(BTPROTO_HCI); | |
1247 | goto error; | |
1248 | } | |
1da177e4 | 1249 | |
1da177e4 LT |
1250 | BT_INFO("HCI socket layer initialized"); |
1251 | ||
1252 | return 0; | |
1253 | ||
1254 | error: | |
1da177e4 LT |
1255 | proto_unregister(&hci_sk_proto); |
1256 | return err; | |
1257 | } | |
1258 | ||
b7440a14 | 1259 | void hci_sock_cleanup(void) |
1da177e4 | 1260 | { |
f7c86637 | 1261 | bt_procfs_cleanup(&init_net, "hci"); |
5e9d7f86 | 1262 | bt_sock_unregister(BTPROTO_HCI); |
1da177e4 | 1263 | proto_unregister(&hci_sk_proto); |
1da177e4 | 1264 | } |